Pump



July 26, 1927. 1,636,826

J. A. MORGAN INVENToR. JOHN A. MORGAN -July 26, 1927.

J. A. MORGAN PUMP Filed Dec .'6 1 924 s sheets-sheet `2 @erA 65 INVENTOR JOHN A. MORGAN ATTORNEY.

BYv

July 26, 1927 J, A. MORGAN PUMP 3 Sheets-Sheet 3 Filed Dec. 6. 1924 INVENTOR. JOHN'A. MORGAN BY v A TTORNE Y.

Patented July 26, 1927.

UNITED STATES PATENT OFFICE. i

JOHN A. MORGAN', LOS ANGELES, CALIFOBNIAASSIGNOB TO THE JOHN A. MORGAN IACHINEBY COMPANY, OF 1.108 ANGELES, CALIFORNIA.'

c Application lled December 6, 1984. Serial lo.' 754,288.

This invention relates to pumps.

The general object of the invention is to provide an improved pump of the rotary displacement type.

One of the speciiic objects of the inventlon is to provide a pum wherein an outer casing is employed and w erein movable vanes are mounted to rotate upon a spider.

A further object of the invention is to provide an improved rotary displacement pump wherein impelling vanes are arranged within the casing to move toward and from the casing and wherein these vanes rotate on a spider 'and their movement is controlled -by means of eccentrically mounted straps.

parent from the following description taken in connection with the accompanying draw- 'ings wherein Fig. 1 is a central sectional View of a pum embodying the features of my invention, t e view being taken on line 11, Fig. 2; Fig. 2 is a view similar to Fig. 1 but at right angles thereto and taken on line 22, Fig. 1; Fig. 3 is an enlarged fragmentary section showing the relation of the parts of the spider in the impeller; Fig. 4 is an enlarged detail showi the mounting of the eccentric straps of the earing' Fig. 5 is a detailed section on line 5-5, ig. 4; Fig. 6 is afragmentary elevation partly in section showing the method of mounting the vanes; Figi; 7 is a sectional view taken on line 7-7, `ig. 2; Fig. 8 is a side elevation of one of the vanes and Fig. 9 is a front elevation of one of the vanes.

Referring to the drawing by reference characters, I have shown a casing for the pump at 10. This casingwomprises a body portion having an inlet orifice 11 and having a discharge orifice 12. The casing 10 is provided with an inner wall 14 which is circular in cross section. Adjacent to the circular inner wall 14 I provide vertical walls 15 which in turn mer e into horizontal walls 16, the latter terminating in the vertical walls 17. The pump is shown as provided with a drive shaft 18. It will be understood that although I have described my invention as embodied in a pump, I wish it to be understood that it is equallyv applicable to a rotary en ine, ameter and for similar purposes.

eferring again to the drawing and particularly to Fig. 2 it will be noted that upon the shaft 18 is arranged a pair of ball races 19. These ball races are supported on ec- I n n rentrlcmembers 20 which are arranged 1n shown as threaded on the shaft 18. A pair of end closure plates 25 may be used at each end of the eccentric member in order to provide a receptacle for lubrication. These end closure plates are shown as provided with 3 packing material `26. Other objects of the invention will be apnumber of movable vanes used in the pump.- In the present instance, I have shown six straps at each side of the casing. These straps are each mounted for independent movement and each pair of straps have their v links 33 connected to a pin 34 which is secured to an impeller 35.

Each of the vanes 35 has its basal ex'- tremity 36 mounted in a receptacle in' a spider 40 which is secured to the shaft 13.l The spider has radial arms arranged to provide a plurality of cavities in the outer face thereof. The cavities are closed inwardly.

The spider may be heldin place by a suitable key 41 as shown. At veach end of the spider I thread the shaft 18 and on this threaded portion I secure sleeves 42 as best shown in Fig. 4. Each sleeve is shown as provided with an inner collar 43. The vportion of the eccentric member 20 adjacent to the sleeves 42 is hollowed out as at 43 for the reception of lubricant.

Upon the sleeve 42 I arrange a pair of spaced lubrication distributing members 44. These lubrication distributing members 44 are provided with 'numerous apertures in their surfaces and the one next to the sleevev 42 is provided with a passageway 45 which communicates in turn with a passageway 46.

which through achannel 47 communicates with the ball race 19 so that the latter may be lubricated. The lower portion of the ball race chamber, as 4shown'at 49 in Fig. 2,-

communicates through a pipe 50 with a pump 51. The oil which runs through the pipe 50 to the pump chamber 51 is pumped through a pipe '52 and through the channelway 53 to the cavity 43 to thus provide thorough lubrication.

The two sides of-the pump are identical in construction as will be apparent froln the study of- Fig. 2.

The vanes 35 are shown in detail in Figs. 8 and 9 where it will be noted that one portion of the impeller as at 55 is provided with a reduced part which engages a pair of the eccentric straps 32 while the other portion 36 is fitted in a recess in the spider and is secured thereto by a pin 56. The outer surface 57 of the impeller is curved on a radius corresponding to the radius of the interior of the casing v10 while the outer end 58 of the impeller is curved on a radius corresponding to the radius of a wear plate 59 which is arranged on the outer portion of the arms of the spider.

On each side of the spider I secure a side plate which is fitted against the opposed sides of the impellers 35 to form a closed channel with the inner wall of the casing. These side plates 65 are secured to the spider by fastening members shown at 66 and are arranged to rotate with the spider.

The vanes are provided with grooves 67 to receive packing material to prevent leakage between the rear plates of the vanes.

The axis about which the eccentric straps 33 turn is eccentric to the axis of the shaft 18 so that these eccentric straps move eccentrically to the shaft 18. As a result, as the shaft rotates it carries the spider and said plates therewith. The eccentric straps rotate about the eccentric bushings 30 and move in and out as their eccentricity is changed thus moving the`vanes inwardly and outwardly.

The arrangement of the eccentricity is such that when the vanes are opposite the intake orifice 11, the vanes are at their inner position, while when the spider and the rotary plates have moved opposite the discharge orifice, the vanes will be in their outward position. This brings about the pumping operation.

In order to maintain the hollow portions of the casing, as at 69, full of fluid while the pump is operating, I connect the discharge 12 by means of a by-pass pipe 70 with a channel 71 that leads into the interior of the casing. With this arrangement when the pump is operated the fluid pumped will fill the casing as at 69 to thus keep the pump in a cool condition and preventing overheating.

The eccentric bushings 30 may be provided with holes 75 through which lubricant will reach the surface between the portion 30 and the floating bushings 31. Other holes f 76 may be provided to lubricate the `outer surface of the bushings 31.

rotary displacement pump which can bc economieally manufactured and which is highly efficlent 1n use.

Having thus described my invention, I

claim:

1. Ina rotary pump, a tubular casing, a rotary mech'anism in said casing including a hub having/radial arms to provide a plu` rality of radial cavities, impeller vanes pivotally mounted to move entirely in said cavities, link' means to move said vanes toward and from said tubular casing and side plates engaging the sides of said arms and the vanes to form chambers.

2. In a rotary pump, a casing, a rotary mechanism in said casing including a hub, radiallyy extending arms on said hub to provide a plurality of radial cavities, impeller vanes plvotally mounted to move entirely in said cavities, and link means to move said vanes in said cavities.

3. In a rotary pump, a casing, a rotary mechanism'iucludmg a shaft, a huh having arms thereon, said hub bein on said shaft, a pair of side plates mounte in said casing on said arms, said arms defining a plurality of cavities between said plates, impeller vanes pivotally mounted\ in said casing to move entirely between said plates, and r0- tary means arranged on said shaft and links connecting said rotary means and said vanes to move the vanes toward and from said casing.

4. In a rotary pump, a casing, a rotary mechanism including a hub havlng radial arms to form a spider, said arms having a pair of' side plates mounted thereon, said arms defining a plurality of cavities between said "plates, impeller vanes pivotally mounted to move between said plates, and means including an eccentric member and an eccentric strap to move said vanes toward and from said casing.

5. In a rotary pump, a casing, a plurality of vanes mounted in said casing for movement toward and from the wall thereof means to impart such movement to said vanes, said means comprising eccentric straps, means to connect said straps to said vanes, an eccentric member arranged in said casing to support said straps, said eccentric member having a` bearing therein and a drive shaft supported by said bearing.

(i. In a rotary pump, a casing, a plurality of vanes pivot-ally mounted in said casing, means to move said vanes toward and from the wall of the casing, said means comprising eccentric straps, means to connect said straps to said vanes, an eccentric member on which said straps are mounted, said eccentric member having a bearing therein, a shaft supported by said bearing, a s ider on said shaft, said vanes being arrange on said spider, and means on said spider coacting with said vanes and said casing to form a plurality of chambers.

7. In a rotary pump, a casing, having a. pair of oppositely disposed eccentric members therein, a main drive shaft mounted in bearings in said eccentric member, a spider secured on said shaft, said spider having outwardly directed cavities, annular plates closing the sides of said cavities, vanes mounted on said spider and adapted for radial movement entirely in said cavities, straps eccentrically mounted on saidieccentric member, said straps being arranged inl pairs on opposite sides of the casing and means connecting each pair of straps with one of said vanes.

8. In a rotary pump, a. casing having an inlet and a discharge orifice, a plurality of vanes mounted in said casing for movement toward and from the wall thereof, means to impart such movement to said varies, a spider mounted in said casing, said spider coactin with said casing and said vanes to provl e a plurality of chambers and by-pass means connecting the discharge orice and the interior of the casing.

9. In a device of the class described, a hollow Casing having an inlet and an outlet, a hollow eccentric member arranged in each end of said casing, a bearing in each hollow eccentric, a shaft mounted in said bearings, an annular plate in each side of said casing, a hub on said shaft, radial arms on said hub, said arms engagino' said plates to form chambers, vanes pi voted on said arms, said vanes being movable in said chambers, a link on each of said vanes and means on said hollow eccentrics engaging said links.

In testimony whereof, I hereunto affix my signature.

JOHN A. MORGAN. 

